---
title: "OS-Specific Troubleshooting"
description: "Follow steps to troubleshoot for your issue. Sending messages Receiving messages Follow steps to troubleshoot for your phone. Phone-Specific Troubleshooting Android phone's may have OS settings that limit notifications from appearing until you open CoolApp. Use the following steps as…"
url: "https://coolapp.com.kh/support/os-specific-troubleshooting/"
updated: "2024-05-30"
category: Troubleshooting
---

# OS-Specific Troubleshooting

Follow steps to troubleshoot for your issue.

Sending messages
Receiving messages


Follow steps to troubleshoot for your phone.

Phone-Specific Troubleshooting


Android phone's may have OS settings that limit notifications from appearing until you open CoolApp. Use the following steps as guidelines to navigate your OS settings.

Android 5
Android 6
Android 7
Android 8 and higher




Android 5

Confirm notifications are enabled for CoolApp.

Android phone Settings > Sound and Notification > App/Application Notifications > CoolApp > confirm Block is disabled.


Confirm CoolApp is enabled to work when ‘Do not disturb’ mode is on.

Android phone Settings > Sound and Notification > App/Application Notifications > CoolApp > Enable Set as priority.


Enable background data.

Android phone Settings > Data usage > Cellular data usage > CoolApp > Background data > Enable Unrestricted data usage.
Android phone Settings > Data usage > Menu > Make sure CoolApp is allowed to work if you've selected 'Restrict app background data'.



Android 6

Make sure all of CoolApp's permissions are granted.

Android Settings app > Apps & Notifications (depending on your device, this may look different) > CoolApp > App Permissions (depending on your device, this may look different) > Turn permissions on.


Confirm CoolApp is enabled to work when ‘Do not disturb’ mode is on.

Android phone Settings app > Sound > Do not disturb > Disable.


Check that CoolApp is excluded from battery optimization.

Advanced settings toolbar icon > Battery optimization > select 'All apps' > CoolApp > select 'Don't optimize.’ > Done > Restart your phone.
Android phone Settings > Apps > Advanced settings toolbar icon > Special access > Battery optimization > select 'All apps' > CoolApp > select 'Don't optimize.’
Android phone Settings > Battery > MENU > Battery optimization > select 'All apps' > CoolApp > select 'Don't optimize.’
Android phone Settings > Apps > Advanced settings toolbar icon > Ignore optimizations > select 'All apps' > CoolApp  > select 'Allow.’


Enable background data.

Android phone Settings > Data usage > Cellular data usage > CoolApp > Background data > Enable Unrestricted data usage.



Android 7

Follow steps for Android 6 above.
Enable background data.

Android phone Settings > Data usage > Data saver > If data saver is disabled, stop here. If data saver is enabled go to Unrestricted data access > Enable CoolApp.



Android 8 and higher

Follow steps for Android 6 above.
Enable CoolApp to run in the background.

Android phone Settings > Apps > App Info > tap our app > Battery > turn on the 'Background activity' option.
Android phone Settings > Data usage > Data saver > If data saver is disabled, stop here. If data saver is enabled go to Unrestricted data access > Enable CoolApp.